Kate, the Princess of Wales, attended the 1st Battalion Irish Guards St. Patrick's Day parade with a bright teal coat dress, heels, and hat.

As Colonel of the Irish Guards, her color choice matched the plume on their bearskin helmets.

Her stand-up collar and button arrangement matched the Irish Guards' outfit.

Kate also had a small flap embroidered on the front of her coat for attaching her sprig of shamrock.

During the parade, Kate handed out shamrock to the Irish Guards and their mascot, Seamus.

In a speech, Kate expressed her pride at being the new Colonel and praised the Guards' dedication and sense of humor.

She also thanked her husband, Prince William, who previously held the role of Colonel.

The parade ended with a royal salute and march-past, with Kate taking the salute as the new Colonel.

Kate's attention to detail in her outfit and her speech showcased her respect for the Irish Guards and her commitment to her new role.